Remote control selective mechanism



June 14, 1932. l. NACHUMSOHN 1,863,411

REMOTE CONTROL SELECTIVE MECHANISM Filed May 25, 1923' 4 Sheets-Sheet 1 June 14, 1932. l. NACHUMSOHN 1,363,411

REMOTE CONTROL SELECTIVE MECHANISM Filed May 25, 1928 4 Sheets-Sheet 2 June 14, 1932. 1. NACHUMSOHN REMOTE CONTROL SELECTIVE MECHANISM Filed May 23, 1928 4 Sheets-Sheet 3 By Me lnvenfar w mgnm.

June 14, 1932. NACHUMSQHN 1,863,411

REMOTE CONTROL SELECTIVE MECHANISM Filed May 25, 1928 4 Sheets-Sheet 4 1447065565: The [aye/liais- Patented June 14, 1932 UNITED STATES PATENr OFFI E" IRVING NACHUMSOHN', or CHICAGO, ILLINOIS, AssIGNon TO TELnTyrE conronarron',

or CHICAGO, ILLINOIs, A CORPORATION or ILLIN Is REMOTE oONraoL SELECTIVE MEo IANIsM Application filed May 23, 1928. Serial No. 280,066.

My invention for which application for Letters Patent has previously been filed Sept. 19, 1923 and for which receipt No. 663,707 was issued relates to the improvements in recorders, and more particularly to recorders utilizing a code in which the various signals comprise permutations of a definite number of different line conditions.

One object of my invention is to provide a device of the character described which operates with great rapidity and extreme exactness. Another object of my invention is to provide a device of the character described which will eliminate the plurality of electromagnets, relays, multiple contact-sets segmented cominutators and the usual plurality of associate apparatus commonly employed in ordinary types of recorders, which are relatively complicated, require numerous fine adjustments and are easy to getout of order. A further object of my invention is to provide a device of the type mentioned utilizing a rotatably mounted type carrier in which said type carrier can be rotated to bring the pre-' determined type character mounted on the periphery thereof into printing position while the impulses which comprise the signal of the same selected character are being received. A further object of my invention is to provide a device of the type mentioned by means of which the printing of a selected character is eiiected immediately upon the completion of the received signal representing said character; and in which the succeeding signal will effect the operation of its intended instrumentality with a negligibly small lapse of time. Another object of my invention is to. obviate the necessity of employing, in a device of the character described, a separate set of permutation devices for selecting or storing up an incoming signal while the type character or instrumentality chosen by the preceding signal is being printed or efi'ected. A further object of my invention is to provide a simplified and practical means for shifting from upper case to lower case characters, or vice versa. Further objects and advantages will'appear as the specification progresses and the novel teaprint hammen See Figs. 1 and .5.

tures will be particularly pointed out in the appended claims. y

In the'drawings, Fig. 1 is a plan view of the improved apparatus. Fig. 2 is a view of the rotation selection mechanism, taken along the line w00, Fig. 1. Fig. 3 is a view of the centering-wheel illustrating the figure-shift mechanism. Fig. i is a detailed showing of a portion of the clutch mechanism." Fig. 5 illustrates the type carrier and its'associate inking, rotating and printing, mechanism. Fig. 6 is a plan view of the winding mechanism. Fig. 7 is a conventional showing'of the ratchet plate a portion of the winding mechanism. Fig. 8 is a detailed view or the print roll and taperfeeding mechanism. Fig.

9 is a section along liney.y, Fig. 1.

in Fig. '5 can beseen the ribbon, or tape, upon which impressions are made. This. tape 1 passes between print roll 2 and the adjacent roll 3. These rolls are rotatably mounted between opposite sides of the print hammer 4 which hammer is pivotally mounted at 4a to the supporting plate 5.

In order to effect printing of the desired typecharacters mounted on the periphery 7a of the type carrier 7 I prefer moving the ribbon 1 against the predetermined character as soon as said character is rotated opposite the print roll 2. This is accomplished by a rotating cam 8 fixedly mounted on a shaft 8 which shaft carries, in a fixed relation thereto, a gear 8 Said gear is rotatedcontinuously by a motorv pinion 9 mounted on a motorshaf-t 9. A suitable motor, not shown, rotates the cam 8 through the gearing mechanism mentioned and the diametrically opposite shoulders 10 of the cam 8 contact with the extreme end 11 of the angular extension 12. of the As the shoulders of thecam 8.1novethe print hammer on pivotal support 4a. the print spring 13, attachedat one end to the angular extension 12 and at its opposite end to an upstanding lug- 14., stretches, as the printgroll is moved away from the type carrier. In order to release the energy stored into the spring13 when the, type carrier is rotated .to the [predetermined position, I provide an arm 14 mounted integrally with the extension 1 12 and an associate locking arm 15 therefor. Said locking arm is fixed onto rotatable shaft 16 and a second arm 17 mounted in perpendicular relation to the first mentioned arm is also carried by the shaft 16. Then arms 15 and 17 are turned in a counter-clockwise direction by the means hereinafter described, the arm 17 engages with a locking pawl 20 and is held in this shifted position against the resiliency of its spring 15 by means of the pawl spring 20. The pawl 20 is'pivotally mounted at z to the supporting plate 5. The arm 15, upon releasing the extension 12, allows the print ham mer 4 to be moved on its pivotal support 4a and the tension spring 13' causes the print roll 2 or the ribbon placed therearound, to contact with the selected type character. As the print roll support commences its move ment towards the type carrier, the finger 22 integrally mounted with the extension 12 simultaneously trips the pawl 20, against the action of itsspring 20, thereby releasing the arm 17 which allows the spring 15' to swing arms 17 and 15 about pivotal support 16, and the arm 15 will engage lug 14 upon the passing of one of the shoulders 10, thereby resetting the print mechanism in readiness for the next impression.

Upon the resetting of the print hammer 4 the ratchet wheel 23, mounted. on the print roll shaft, will pass the pawl 24, which pawl will engage'the ratchet teeth and turn the ratchet wheel and print roll thereby feeding thetape or ribbon in the longitudinal direction necessary in printing.

Rigidly fastened to the plate 5 is a vertical support 26 which support carries in a fixed relation thereto a shaft 27. One leg of a T- shaped bearing member 28 is rotatably mounted on the shaft 27 and in order to retain said bearing member fixed relative to axial movement on the shaft 27, a slot 30 in the member 28 and a pin 7' projecting therethrough, are provided; the pin being fixed transversely in the shaft 27. j

In the other leg of the bearing member 28 is a shaft 32 rotatably mounted therein, and at one end of said shaft is a bevelled gear 33, fixed thereon, while fixed at the otherend of said shaft is bevelled gear 34. The gear 33 is in mesh with teeth 35 of the cam 8 and the gear 34 meshes with teeth 37. (See Fig. 1.)

The teeth 37 are mounted on the rear side of the ratchet plate 39 shown in Fig. 7, which plate is secured to the spring barrel 40.- Said spring barrel is rotatably mounted about the type carrier shaft 43 andrests upon the post p k of the plate 5. Adjacent the ratchet teeth of the plate 39 isa post 44 which pivotally carries a pawl L, which pawl is held in constant engagement with the ratchet teeth by means of a spring.

Rotatably mounted in the spring barrel 40 (Fig. 6) is a clutch ring 46, and pivotally mounted on said ring, is a disengaging arm 48 which extends through. a sloping opening 49 of the spring barrel. By referring to Fig. 6 it can be seen that if the ring 46 is held against rotation while the barrel 40 is rotated in a counter-clockwise direction, that the spring 47 will stretch allowing the barrel to rotate relative to the ring and in so doing cause the disengaging arm 48 to slide up the incline 49 thereby moving the arm 48 on its pivotal support 49. The curved shoe 48' in rotating normally passes over the shoulder 50 (see Fig. 5) of the gear 34.

The spindle 43 has coiled therearound a fiat spiral spring (not shown), as a clockspring, the innermost end of whichis fastened tothe lug 52 of the ring 46 in the spring barrel 40. The purpose of this mechanism, as is apparent, is to keep the above mentioned spiral spring constantly wound, and when the tension of said spring, the purpose of which is to rotate the type carrier, exceeds the required amount, the shoe 48 will press against the shoulder 50 thereby disengaging the gear 34 from teeth 37 in disengaging these teeth, the bearing member 28 is rotated about the shaft 27 and this movement is yieldingly opposed by spring 53.

In order to permit the selective rotation of the type carrier to predetermined positions, Iemploy the following mechanism: a post 55 (Fig. 1) rotatably sup orts a ring 56, a sleeve 57 and a centrally isposed shaft 58. The ring 56 pivotally supports a member 57, which member carries the 'interposing arm 59. The sleeve 57 carries integrally sector plate 60, and pivotally mounted at 61 on said plate, is a stop member 62. The stop member is held in the position shown in Fig. 2by means of spring 63 and can be moved against the tension of said spring byfinger 64 which finger is pivotally mounted at 64 on the supporting member 66.

The sector 67, carried by shaft 58, has mounted thereon a stop member 68, which stop member is held in normal position by spring 69 and can be moved against the tension of said spring by finger 70; said finger being rotatably mounted at 71 on the'support 66.

Sector plate 60 has a pivotally mounted extension 72. Said extension is supported by pivot screw 73 on the plate 60; the former being yieldingly held by spring 74 so that the approximate middle portion of the extension 72 normally rests against the angular upstanding edge 76 of the sector 60. The extreme end' 77 of the arm 72 is bent in approximate perpendicular relation to the arm proper. The arm 72 can be moved on its pivotal support by means of finger 78 which finger is pivotally mounted at 79 on its support 66. o

A spring 57 normally retains the interposing arm 59 in an elevated position so that it contacts with the end 7 7 of the arm 72 preventing rotation thereof. 1

An arm rotatably mounted at 81 on th plate 66 is normally held, by a spring hereinafter described, so that it prevents rotation of the member 59.

When the arm 72 is moved outwardly as heretofore described, its downward projection 83 engages, with the outermost edge of the curved retaining plate 84, as the sector 60 and its associate arm7 2 rotate, thereby keeping the arm 72 in its radially shifted position during the rotation thereof.

Arm 5'7 has a downwardly extending toe 57 and engaging therewith is a finger 85 rotatably mounted at 86 to the supporting member 66. The height of the member 68, rela tive to the sector 67, is such that the former is nearer to the portion 2 of an arm 104.

Fixed relative to the rotation of spindle 43 is the well-known star-wheel, or centering plate 88, (Fig. 3) and mounted at 89 on the print hammer 4 is a projection which, when the print hammer moves toward the type carrier, engages between a pair of adjacent teeth of the starqvheel, thereby bringing the selected type character into accurate position for printing.

In order to shift the type carrier axially when it is desired to change from lower to upper case characters, I provide a slide 90 diametrically disposed on the star-wheel 88. The member 88 has two vertical posts 91 rigidly fixed thereto, and said posts project through holes 92 of the type carrier; this arrangement permits axial shifting of the type carrier but does not allow the latter to rotate relative to the star-wheel.

In perpendicular relation to the star-wheel 88 and integral with the slide 90 are two projections 93, one edge of each of which is sloped so when the star-wheel is rotated to bring the end 94 of the slide 90 opposite the projection 89 of the print hammer, said projection will move slide 90, thereby causing projections 93, by virtue of the sloping edges thereof, to engage the hub of the type carrier, so as to shift said type carrier upwardly; this shifting is yieldingly opposed by spring 96, which spring is retained on the shaft 43 by a knurledthumb-nut 97. lVhen the star-wheel is rotated to bring the rear end 98 of the slide adjacent to the projection 89, the slide will be shifted in the opposite direction, thereby permitting the spring 96 to return the type carrier to its normal unshifted position. 7

An ink roll 99 rotatably mounted adjacent to and in contact with the type carrier, at all times provides a well inked type. The ink roll holder 100 is at one end rotatably mounted on the shaft 43 between the spring 96 and the hub 95, and its opposite end 101, which end also facilitates the handling of the inker,

is slidably disposed in a slot between vertical upstanding members 102.

At the lower end of the spindle 43 is a V radially extending arm 103 which carries pivotally thereon an associate arm 1 04.

ing the lowermost end of saidtrigger, which end is substantially of the same shape as the end 106 of the arm 104, to engage the end 106 thereby raising the opposite end of the lever 104. v

The motor pinion 9 also drives a gear 110 which gear is rotatably mounted on a shaft 111. The shaft 111 is rotatably mounted between supporting plates 112 and 113; the latter plate also forming a bearing support for the shaft 8. Fixed relative to shaft 111 is'a face plate 112 and adjacent said plate but on the opposite side of gear 110 is a friction plate 113 (Fig. 4) in the facial groove of which is a friction ring 114 securely wedged therein. A spring (not shown) is coiled about the shaft 111 at the point Z2 and is held compressed by collars 116. The function of said spring is to keep the friction ring pressed against the side of the gear 110 so that said gear will be gripped by the friction ring and turn the latter and the shaft 111 therewith; but through the medium of the clutch mechanism already described the shaft 111 may be stopped, without stopping or appreciably al-' tering the speed of the driving motor. A pin m disposed in the friction plate fits into a longitudinal slot of the shaft 111 thereby permitting axial but not rotative movements of the friction plate relative to the shaft. A in 127 slidably disposed in the central hollow of the shaft 111 has near one end a pin 118 transversely disposed therethrough. The latter pin extends through slot openings 119 and engages with the lever. 120 which lever is pivotally mounted at 121 to the'actuator support 122. The latter support is setscrewed or otherwise fastened to the shaft 111.. The actuator support carries a bushing 121 in which a hardened steel pin, or actuator is slidably disposed therethrough. A coiled spring (not shown) is placed at 123 between the bushing 121 andthe head portion 124 of the actuator, so that the end of said actuator is yieldingly held in an elevated position relative to the pin 122. Electromagnet 128 with its armature 129, is set up in the well-known arrangement used in ordinary'telegraph relays. Screw 130,.supp0rted by p.0st131, limits th e backward movement of the armature.

' The vertical piece 134 of the armature, which magnet will shift said pin axially thereby moving the lever 120 by means of the pin 118 heretofore explained, which lever will shift pin 122.

The shafts 71, 64, 79, 86 and 81, rotatably mounted between supporting plates 66 and 112, carry trip members (Fig. 9) 135, 136, 137, 138, 139 respectively. The'springs .9, through arms 8' yieldingly retain the trip members against their respective lugs 7.4, which lugs are mounted integrally with and in perpendicular relation to the supporting plate 112. Each of trip members terminate into semicircular-shaped fingers 'I' which fingers are elevated relative to the main portion of their respective supports; and the upward surfaces, as at 0 are in the same plane which plane is adjacent to the plane of rotation of the end of the pin 122 when said pin is not shifted forward by means of the electromagnet as heretofore explained. If, however, during rotation of the pin, or actuator 122, said pin is shifted forward, it will pass by the cuved inward edges of the trip members and move said trip members outwardly thereby turning the trip member shafts, 71, 64:, 79, 86 and 81 respectively, a few degrees. Since the respective members 70, 6 1, 78, 85 and. 80 are moved by the turning of these shafts as heretofore explained, it is therefore obvious that by selectively energizing the electromagnet 128 during rotation of actuator 122, said actuator will be in an active or inactive position to move the trip members dependent upon the electrical condition of'the line on which said electromagnet is operated during the intervals which comprise the permutations of the signaling code. And that said movement of the trip members will select the desired type character or. instrumentality, as will be explained.

In accordance with the present apparatus, the signals or characters employed in the signaling code, are distinguished by permutations of a definite number of llIlPHlSQS ilVG in this instance. These impulses, when transmitted over a line wire, as in the case of line telegraphy, energize the electromagnet 128, which electromagnet has one terminal of its winding connected to the line and its other terminal to the return circuit, as the earth. In duplex telegraphy, however, where a differentially wound line relay must be employed in order to effect the simultaneous transmission of two messages in opposite directions over the same wire, the electromagnet would receive its impulses in accordance with the operation of the line relay contacts,

which contacts would, of course, controlled by the line current impulses.

In order to impart the impulses to the line a commutator or so-called sunflower switch could be employed at the transmitter and the rotating member, as the brush, of this commutator would be connected to'line. By a means hereinafter'described the pin 122 would be turning about the axis 111 in definite relation with the transmitter, so that current applied to the various segments of the commutator would be transmitted over the line. While for the present purpose we may assume that the impulses are imparted to the line at the tansmitter by a rotating brush, or switch arm, that passes over selectively energized segments of a relatively stationary commutator, it is obvious that my mechanism may be utilized on lines or even radio systems that employ any of the suitable types of transmitters commonly known in the art; since I do not claim these nor any other particular transmitter as part of this invention it is therefore thought that a further description r is such that when the actuator, in rotating, is

not shifted by the electromagnet as already explained, said actuator will pass over the holding member 143. If, however, the actuator is shifted towards the plate 112 it will engage the upstanding end of the stop member 14-3, and the rotation of the actuator will abruptly cease, the motor continuing its rotation through the medium of friction clutch already described.

In simplex telegraphy there would normally be current over the line so that the actuator would not rotate, on account of it being shifted into engagement with the holding member. Preceding each signal there would be a no-current interval which would, as previously explained, initiate the rotation of the actuator. Following this no-current interval the transmitter could impart the signals to the line inaccordance with the si naling code and said impulses would select the corresponding trip members 135 to 139 inclusive. passed the fifth trip member 139, the anchorshaped projection'l l'f, fastened at148 to the shaft 111, would move the lever 14L9and its supporting shaft 16 against the action of the spring 150. Since the arm 15 is fixedly mounted on the other end of the shaft 16,

heretofore explained, it is obvious that after completing the selection of the trip members After the actuator has during the rotation of the actuator that the arm 15 will be swung with its support 16 thereby efiecting the printing of the selected character or instrumentality, such as figureshift or shift-release.

. In order to advance the tape or ribbon 1 in letter-space direction, as in the spacing of words, the same code impulses which effect the shift-release function will be transmitted, since the tape feeds when the shiftrelease signal is sent.

With reference particularly to Fig. 2 it is to be noted that sector 67 covers twice as many geometrical degrees as the sector 60; that sector 60 covers approximately twice as many degrees as the distance from extension 76 to 77 that the arcuate distance from 76 to 77 is twice that of the curved length of the interposing member 59; and that the length of member 59 is twice that of the member 80. These five members cover, the angular distance equivalent to characters mounted on the periphery of the type carrier, of sixteen, eight, four, two and one, respectively. Thus by selectively arresting, as these members do, the rotation of the index lever 104, the type carrier can be made to stop in anypredetermined position dependent upon the combination of trip members operated by the actuator.

The lower end 2 of the index 104 (Fig. 1) will, when pawl 68 is moved by finger 70, (Fig. 2) be permitted to pass the pawl 68 thereby allowing the index to rotate the distance equivalent to sixteen character-degrees. To rotate the index the additional distance equivalent to eight character-degrees finger 64 would be operated thereby turning pawl 62 about its pivotal support and in turning will allow the index to turn the additional distance whereupon the index would engage the upstanding edge 7 6 of the sector 60.. To rotate the indexical mechanism a further distance equivalent to four character-degrees, the finger 78 would be operated thereby swinging the extension 72 on its pivotal sup port; this would allow the sector 60 to rotate the additional distance until the edge 76 would contact with the forward edge of the interposing member 59. To rotate-the index a still further distance of two characterdegrees the, member 59 would be shiftedron its pivotal support by means of the finger 85 as heretofore explained; and to rotate the index the additional distance equivalent to the pitch distance of adjacent characters on the type wheel the shaft 81 would be rotated thereby removing its interposing arm 80 from the path of rotation of the index. The shaft 81 forms the stop member for the index or the interposing members.

Springs (Z, e and 7 yieldingly maintain thesectors 71, 59 and 60, respectively, in their normal rotative positions 1 It is to be noted that theindex rotates the members interposed between it and the stop 7 simultaneously moves forward and locks the i type wheel, by means of thestar-wheel 88,

in its selected position until printing is completed. While theindex was thus shifted the interposing members, by means of their respective retractile springs, are allowed'to return to normal positions, in readiness for the next signal. 7 r

A number of strut posts 156', conveniently placed, keep the parts of the machine rigidly together, and screws 157 secure the supporting members rigidly to the base of the machine.

An advantage in the improvement is the fact that the type carrier and its associate index arm normally tend to rotate the interposing members which oppose this rotation; and being that said interposing members, which prevent rotation of the type carrier in character-pitch units of 16, 8, 4, 2 and 1, respectively, are actuated successively commencing with the largest member and further, that the speed of the type carrier, as it is released by the interposing members, is much greater than the speed of the rotating actuator which trips said interposing members, it is obvious that when the actuator becomes rotatively associated with the. fifth interposing member, the type carrier can require at most but one character-degree of rotation to bring the predetermined character into printing position. Thus at the instant whenthe signal for a character iscompleted, the character selected is practically in printing position and, therefore, the member 147 can be timed relative to the actuator so as to release the print hammer almost simultaneously with, or a comparatively brief interval after, the passing of the actuator by the fifth trip member. These obvious advantages are readily apparent.

It is deemed Within the spirit and scope of the invention to utilize certain parts thereof without its adoption in entirety. For ex ample, the rotation selective mechanism described could be utilized in apage printer, for recording messages on sheets of paper instead of the ribbon or tape mentioned in the preferred form;

Iclaim: '2

1. In a device of the character described," a plurality of type characters, electrorresponfor successively associating said actuator with sald components in descending order. 2. In a device of the character described, a

.plurality of type characters, permutation means comprising a plurality of components each of which is given twice as large a rotation assignment as the preceding component, an actuator common to said components, means for successivelyassociating said actuator with said components in descending order and an electromagnet for operating said actuator.

3. In a device of the character described, a type carrier, an aggregate motion mechanism therefor comprising a plurality of permutational devices electro-responsively selectable, said devices having different assignments, an actuator for said devices,-means for successively associating said actuator with the largest permutational device first and thereafter associating said actuator with the permutational devices having smaller assign: ments. i

4:- In a printing telegraph receiver; a type Wheel positioning mechanism comprising a set of rotatable sectors; each of different angular dimensions and each arranged to impart a definite and characteristic degree of rotation to said typewheel; and means selectively operable to permit selected ones of said sectors to operate to produce a desired cumulative rotation of said typewheel.

5. In a printing telegraph receiver; .a typewheel positioning mechanism comprising a set of rotatable sectors, each having a different angular dimension for imparting a definite and characteristic degree of rotation to said typewheel; stop mechanismrfor each sector; means normally tending torotate said sectors; and selecting mechanism re sponsive to received code, combinations of impulse conditions for tripping selected ones of said stop mechanisms to permit predetermined rotation of said' sectors associated therewith whereby a desired cumulative rotation is imparted to said typewheel.

6. A-printing telegraph receiver comprising a plurality of rotatablesectors, each having a different'angular dimension; an intermittently rotating shaft associated with said sectors; means for normally holding said shaft together with said sectors against rotation; a single select ng magnet; means controlled by said selecting magnet for permitting therotation of said shaft, said selecting magnet being responsive to received code combinations of signalling conditions for positioningsaid sectors in predetermined combinations in accordance with characters to be printed; tripping members secured to each of said sectors; a type wheel; and mechanical means brought into operation by said tripping members to impart to said typewheel sufiicient rotation to position the selected characters in printing position.

, ing a selecting mechanism including a series of sectors each of different angular dimensions, rotatable through a substantially circular path and arranged to be operated in predetermined combinations; a typewheel;

means controlled through the operation of said sectors for selecting a desired character on said typewheel; a printingmedium; a printing hammer; and means operative due to the setting of said selecting mechanism for causing said hammer to print the selected characters on said printing medium.

8. A selector mechanism comprising a r0- tating shaft; a plurality of members each of different angular dimensions arranged concentrically about said shaft and rotatable therewith; a lateral projection on each of said members in operative relation with the next adjacent member; a selecting magnet responsive to received code combinations of signalling conditions adapted to successively deflect said projections to release the neXt' successive member for rotation; and'means selectively controlled through the selective rotation of said members. I

9. A selecting mechanism comprising an intermittently rotating shaft; a plurality of members each of difierent angular dimensions arranged concentrically about said shaft and rota-table therewith; a tripping finger individual to each of said members; a lateral projection on each of said members in operative relation with the tripping finger of the next succeeding member; a selecting magnet responsive to received code combinations of signalling conditions adapted to successively operate said tripping fingers to cause selective release of the associated members for 'rotation; and means selectively controlled by said members.

10; In a telegraph receiver; a plurality of rotatable selecting members each having a lateral projection; a rotatable typewheel having a stop arm rotatable therewith in the path of said projections; means responsive to received code combinations of signalling conditions for variably operating said members whereby said projections'are placed at different; angular positions; and means for rotating said typewheel until said stop arm thereon engages one of said projections.

11. In a telegraph receiver; a plurality of rotatable selecting memberseach having a lateral projection; 'a rotatable typewheel '15-;

having a stop arm rotatable therewith in the path of said projections; means responsive to received code combinations of signalling conditions for variably operating said mem-- bers in different positions whereby said projections are placed at different angular positions; means for rotating said typewheel un til said stop arm engages one of said projections; and means for rotating the typewheel at such a speed that the typewheel is in the 5 proximity of the projection with which its stop arm is to engage substantially at the termination of the receipt of a correspond ing code combination of signaling conditions.

12. In combination; a plurality of rotatable cumulative selectors; means responsive to received code combinations of signalling conditions for operating said selectors in various combinations; stop mechanism variably positioned in accordance with the position of said selectors; a stop arm for engaging said stop mechanism; and means for rotating said stop arm at such a speed that said stop arm is in proximity to said stop mechanism immediately after said sectors have been set by a corresponding code combination of conditions.

13. In a printing telegraph receiver; a plu rality of rotatable selectors each having different angular dimensions; means responsive to received code combinations of signalling conditions for operating said selectors in various combinations; stop mechanism variably positioned in accordance with the position of said selectors; a typewheel having a stop arm for engaging said stop mechanism; and means for rotating said typewheel and said stop arm at such a speed that said stop arm is in proximity to said stop mechanism immediately after said selectors have been set by a corresponding code combination of signalling conditions.

14. In a device of the character described; a plurality of type characters arranged on a rotatable typewheel; a stop arm rotating with said typewheel; electro responsive permutation means comprising a plurality of components each of which in ascending order is given twice as large a rotation assignment as the preceding component; an actuator common to said components; means for successively associating said actuator with said components in descending order for variably operating said components to determine the stop position of said typewheel; and means whereby said typewheel is positioned in proximity to said stop position immediately after the last of said components have been operated by said actuator.

15. In a device of the character described; a rotatable typewheel having a stop arm; an aggregate motion mechanism therefor comprising a plurality of selectable permutation devices each having a different movement assignment; an actuator for said devices; means for successively associating said actuator with said permutation devices in a manner to cause said permutation devices to cumulatively determine the stop position of said typewheel; and means for rotating said typewheel at such a speed that said typewheel is in proximity to the selected stop position thereof immediately after the operation of the last of said permutation devices.

16. In a tape printer; means for advancdesired characters comprising a plurality of 1 components each having a different dimension and typewheel stop mechanism the stop position of said typewheel being determined by the aggregation of said diiferent dimensions;andmeans whereby said typewheel is positioned in proximity to the selected stop position by said stop mechanism immediate- 1y after the operation of the last said comp'onentsfor a given selection.

17. In a-telegraph printer having a typewheel a stop arm rotatable therewith, a stop abutment adapted to normally lie in the path of revolution of said stop arm and a plurality of sectors of varying angular dimension adapted to individually or compositely interpose between said stop arm and said abutment, the method of selectively stopping said typewheel which comprises releasing certain of said sectors so that they do not interpose between said stop arm and said abutment, and thereby determine the stop position of said typewheel by the interposition of the remaining sectors.

18. In a printing telegraph selector, a rotating typewheel, a prime. mover, frictional driving connection between said typewheel and said mover, means for stopping said typewheel in any angular position to correspond with predetermined selection including a stop arm rotative with said typewheel, a set of concentric segments varying successively in angular dimension so that each succeeding one is one-half the dimension of the previous one and the final or smallest one equal to the angular distance of one step positionment, and means including individual trip members for each of said segments, conditioning means for predetermining the selection of certain of said segments by tripping the trip members of the remaining of said segments and a zero position stop whereby the continued rotation of said stop arm collecting the conditioned ones of said segments is arrested by the contiguous abut-' ment of said stop arm, segments and said zeroposition stop. 7

19. A telegraph selector having a rotating shaft start-stop means including a zero position stop member, a minimum number of individual segments of varying angular size contiguously disposed so that varying combinations of said segments afford any of a predetermined plurality of composite an gular segments and means for selecting certain of said individual segments including a single fmagnet successively operative to release certain of said individual segments and a stop arm operative to collect the remainder of said individual segments to encounter said zero stop for thereby arresting the movement of said shaft.

20. The combination set forth in claim 19 and means for returning said segments to normal posltion preparatory for a succeedlng select1on.

21. A telegraph selector including start- Q stop means, a controlled shaft, a single magnet control for said start-stop 'means operative to arrest said shaft at a concluding signal and to release it in accordance with an initial signal and means for arresting said shaft at various positions during the interim of its cycle including a plurality of sectors, and means under the control of said single magnet whereby certain one or ones of said sectors are selectively interposed to vary the stop position.

IRVING NACHUMSOHN. 

